package demo2;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {
        String data="今天是周五";
        FileOutputStream fileOutputStream =new FileOutputStream("1.txt");
        byte[] bytes= data.getBytes();
        fileOutputStream.write(bytes);
        //获取文件
        FileInputStream fileInputStream =new FileInputStream("1.txt");
        byte[] buffer =new byte[1024];
        int bytesRead;
        StringBuilder content =new StringBuilder();
        while ((bytesRead =fileInputStream.read(buffer))!=-1){
         content.append(new String (buffer,0,bytesRead));

        }
        System.out.println("文件内容："+content.toString());
    }
}
